Vandu

Junior Analyst

Has solved a first real set of interview questions.

Practicing since October 20261-day streak

Points

520

Questions solved

40

Projects finished

0

Longest streak

2 days

Badges

• First question
• 10 questions
• 25 questions

Skills

Skill map

Every topic in the question bank, and how much of each one Vandu has worked through.

• Query foundations

  Learning · 24 of 69

  Reading a table and asking it a straight question.

  • Dates5/16
  • Conditional logic3/12
  • Strings1/11
  • Calculations3/10
  • NULL handling2/9
  • Filtering6/7
  • Logical operators4/4

• Combining data

  Learning · 5 of 36

  Putting tables together without losing or duplicating rows.

  • Joins3/15
  • Reshaping0/15
  • Subqueries2/5
  • Deduplication0/1

• Aggregation and windows

  Learning · 7 of 71

  Summarizing, ranking and comparing rows against their group.

  • Window functions2/32
  • Ranking2/15
  • Aggregations3/14
  • Running totals0/10

• Python foundations

  Learning · 3 of 21

  The data structures every Python interview leans on.

  • Arrays0/6
  • Lists0/5
  • Tuples0/3
  • Dictionaries0/3
  • Math3/3
  • Sorting0/1

• Algorithms

  Learning · 1 of 17

  The patterns behind the timed screening rounds.

  • Hashing1/8
  • Two pointers0/4
  • Binary search0/4
  • Sliding window0/1

Certificates

• Junior Analyst

  Earned Oct 12, 2026

  Open certificate

Projects

No Data Labs projects posted yet.